A clinical trial is investigating the efficacy of three different therapeutic regimens: Regimen Alpha, Regimen Beta, and Regimen Gamma. There are 120 volunteers participating in the study.
Explain how the researchers could randomly allocate the 120 participants to the three treatment groups so that there are exactly 40 participants in each group.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.